Resonance is something I had not considered, but could be an issue if it occurs
below 30 MHz.
Not sure what exactly is going to resonate here, though. The capacity of the
test sample enclosure relative to the floor ground has to tank with an
inductance. The only inductance is if there is
I agree with your interpretation of the enquiry. I think it is necessary
to watch out for the legs. if they are frames (or some more complex
construction) rather than single pillars, becoming resonant loops at
some frequencies. I suppose single pillars could also resonate.
On 2023-12-28
Ken et al,
I think the query was just the opposite. The tabletop is wooden, but do the
legs need to be wooden as wel? The FCC paradigm (AFAIK) places the test
sample 80 cm above ground, thus limiting parasitic capacity. My gut response is
they should be fine with metal legs, as long as
Hello fellow experts, we're looking to build a conducted emission
pre-compliance test station to FCC Part 15 Subpart B requirements (residential
applications).Is a non-metallic table a necessity for reasonable accuracy? We
have a number of lab benches with wood tops and metal legs that would
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